1 | /**
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2 | * @license
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3 | * Copyright Google LLC All Rights Reserved.
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4 | *
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5 | * Use of this source code is governed by an MIT-style license that can be
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6 | * found in the LICENSE file at https://angular.io/license
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7 | */
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8 | import { APP_BOOTSTRAP_LISTENER, ApplicationRef, Inject, InjectionToken, Optional, PLATFORM_ID } from '@angular/core';
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9 | import { DOCUMENT, isPlatformBrowser, isPlatformServer } from '@angular/common';
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10 | import { filter, take } from 'rxjs/operators';
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11 | import { EventReplayer } from './api/event.replayer';
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12 | import { PREBOOT_NONCE } from './common/tokens';
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13 | import { getInlineDefinition, getInlineInvocation } from './api/inline.preboot.code';
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14 | import { validateOptions } from './api';
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15 | const PREBOOT_SCRIPT_CLASS = 'preboot-inline-script';
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16 | export const PREBOOT_OPTIONS = new InjectionToken('PrebootOptions');
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17 | function createScriptFromCode(doc, nonce, inlineCode) {
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18 | const script = doc.createElement('script');
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19 | if (nonce) {
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20 | script.nonce = nonce;
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21 | }
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22 | script.className = PREBOOT_SCRIPT_CLASS;
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23 | script.textContent = inlineCode;
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24 | return script;
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25 | }
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26 | export function PREBOOT_FACTORY(doc, prebootOpts, nonce, platformId, appRef, eventReplayer) {
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27 | return () => {
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28 | validateOptions(prebootOpts);
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29 | if (isPlatformServer(platformId)) {
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30 | const inlineCodeDefinition = getInlineDefinition(prebootOpts);
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31 | const scriptWithDefinition = createScriptFromCode(doc, nonce, inlineCodeDefinition);
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32 | const inlineCodeInvocation = getInlineInvocation();
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33 | const existingScripts = doc.getElementsByClassName(PREBOOT_SCRIPT_CLASS);
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34 | // Check to see if preboot scripts are already inlined before adding them
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35 | // to the DOM. If they are, update the nonce to be current.
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36 | if (existingScripts.length === 0) {
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37 | const baseList = [];
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38 | const appRootSelectors = baseList.concat(prebootOpts.appRoot);
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39 | doc.head.appendChild(scriptWithDefinition);
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40 | appRootSelectors
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41 | .map(selector => ({
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42 | selector,
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43 | appRootElem: doc.querySelector(selector)
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44 | }))
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45 | .forEach(({ selector, appRootElem }) => {
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46 | if (!appRootElem) {
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47 | console.log(`No server node found for selector: ${selector}`);
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48 | return;
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49 | }
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50 | const scriptWithInvocation = createScriptFromCode(doc, nonce, inlineCodeInvocation);
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51 | appRootElem.insertBefore(scriptWithInvocation, appRootElem.firstChild);
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52 | });
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53 | }
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54 | else if (existingScripts.length > 0 && nonce) {
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55 | existingScripts[0].nonce = nonce;
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56 | }
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57 | }
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58 | if (isPlatformBrowser(platformId)) {
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59 | const replay = prebootOpts.replay != null ? prebootOpts.replay : true;
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60 | if (replay) {
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61 | appRef.isStable
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62 | .pipe(filter(stable => stable), take(1)).subscribe(() => {
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63 | eventReplayer.replayAll();
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64 | });
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65 | }
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66 | }
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67 | };
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68 | }
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69 | export const PREBOOT_PROVIDER = {
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70 | provide: APP_BOOTSTRAP_LISTENER,
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71 | useFactory: PREBOOT_FACTORY,
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72 | deps: [
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73 | DOCUMENT,
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74 | PREBOOT_OPTIONS,
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75 | [new Optional(), new Inject(PREBOOT_NONCE)],
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76 | PLATFORM_ID,
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77 | ApplicationRef,
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78 | EventReplayer,
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79 | ],
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80 | multi: true
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81 | };
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If they are, update the nonce to be current.\n      if (existingScripts.length === 0) {\n        const baseList: string[] = [];\n        const appRootSelectors = baseList.concat(prebootOpts.appRoot);\n        doc.head.appendChild(scriptWithDefinition);\n        appRootSelectors\n          .map(selector => ({\n            selector,\n            appRootElem: doc.querySelector(selector)\n          }))\n          .forEach(({selector, appRootElem}) => {\n            if (!appRootElem) {\n              console.log(`No server node found for selector: ${selector}`);\n              return;\n            }\n            const scriptWithInvocation = createScriptFromCode(doc, nonce, inlineCodeInvocation);\n            appRootElem.insertBefore(scriptWithInvocation, appRootElem.firstChild);\n          });\n      } else if (existingScripts.length > 0 && nonce) {\n        (existingScripts[0] as any).nonce = nonce;\n      }\n    }\n    if (isPlatformBrowser(platformId)) {\n      const replay = prebootOpts.replay != null ? prebootOpts.replay : true;\n      if (replay) {\n        appRef.isStable\n          .pipe(\n            filter(stable => stable),\n            take(1)\n          ).subscribe(() => {\n          eventReplayer.replayAll();\n        });\n      }\n    }\n  };\n}\n\nexport const PREBOOT_PROVIDER = {\n  provide: <InjectionToken<() => void>>APP_BOOTSTRAP_LISTENER,\n  useFactory: PREBOOT_FACTORY,\n  deps: [\n    DOCUMENT,\n    PREBOOT_OPTIONS,\n    [new Optional(), new Inject(PREBOOT_NONCE)],\n    PLATFORM_ID,\n    ApplicationRef,\n    EventReplayer,\n  ],\n  multi: true\n};\n"]} |
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